Catherine Stamper

Catherine Stamper moves through the tense, moneyed world of The Undoing with a watchfulness that suggests she sees more than she says. Introduced at the edges of a case already spiraling out of control, she carries herself with quiet composure, giving little away about what she wants or what she knows.

Sofie Gråbøl brings her trademark stillness to a role built on restraint, letting silence and a level gaze do work that dialogue doesn't need to. Even in limited screen time, she suggests a whole interior life happening just beneath the surface, which is exactly the kind of performance this brittle, secretive story rewards.